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Glaucoma drainage implants in the treatment of refractory glaucoma in pediatric patients
R Autrata1, I Helmanova, H Oslejskova
1Department of Pediatric Ophthalmology, Faculty of Medicine, Masaryk University Hospital, Brno, Czech Republic. rautrata@fnbrno.cz
Insights
Glaucoma drainage implants (Molteno and Baerveldt) are safe and effective for pediatric glaucoma refractory to other treatments. Surgery showed sustained intraocular pressure reduction and high success rates in children.
Area of Science:
- Ophthalmology
- Pediatric Surgery
- Glaucoma Research
Background:
- Pediatric glaucoma often requires advanced surgical interventions when medical therapy and initial surgeries fail.
- Glaucoma drainage devices (GDDs) offer a potential solution for refractory cases.
Purpose of the Study:
- To evaluate the clinical outcomes, efficacy, and safety of Molteno and Baerveldt glaucoma drainage implants.
- To assess GDDs in children with primary and secondary glaucomas resistant to conventional treatments.
Main Methods:
- Retrospective analysis of 76 children (<18 years) who received GDD implantation (1990-2004).
- Evaluation of intraocular pressure (IOP), visual acuity, complications, and medication use.
- Success defined by IOP (7-22 mmHg), absence of further surgery, and no vision-threatening complications.
Main Results:
- Mean IOP decreased significantly from 33.6 mmHg preoperatively to 17.1 mmHg postoperatively.
- Cumulative success rates ranged from 93% at 6 months to 65% at 6 years.
- Lower age at surgery was associated with a higher risk of treatment failure; no significant difference between primary and secondary glaucoma.
Conclusions:
- Molteno and Baerveldt glaucoma drainage implants represent a safe and effective surgical option.
- GDD implantation provides a valuable treatment for refractory pediatric glaucoma unresponsive to prior interventions.
Purpose:
The aim of this study is to report the clinical course, effectiveness, and safety of glaucoma drainage implants (Molteno and Baerveldt devices) in primary and secondary childhood glaucomas refractory to conventional surgical treatments and medical therapy.
Methods:
This retrospective study included 76 children (76 eyes) younger than 18 years who underwent glaucoma drainage device (GDD) implantation in our clinic between 1990 and 2004. The mean age at time of surgery was 6.9+/-5.3 years (range: 4 months to 17.5 years). Intraocular pressure (IOP), visual acuity, corneal diameter, axial length, intraoperative and postoperative complications, and number of glaucoma medications were evaluated. Criteria for success were defined as IOP between 7 and 22 mmHg with or without glaucoma medications, no further glaucoma surgery, the absence of visually threatening complications, and no loss of light perception. Results were compared for children with primary and secondary glaucomas. The mean follow-up was 7.1+/-6.5 years (range: 1.6 to 15.2 years).
Results:
Mean preoperative and postoperative IOP was 33.6+/-11.4 mmHg and 17.1+/-6.5 mmHg (p<0.001), respectively. Kaplan-Meier survival analysis showed cumulative probability of success: 93% at 6 months, 91% at 1 year, 82% at 2 years, 76% at 3 years, 71% at 4 years, 67% at 5 years, and 65% at 6 years. There was no difference between patients with primary (n=31 eyes) and secondary glaucoma (n=45 eyes) in terms of cumulative success (p=0.186), final IOP, number of medications, or length of follow-up. On average, the GDI surgery was successful for a mean period of 6.7 years. Fourteen eyes of 76 (18.4%) failed: 10 eyes with uncontrolled IOP, 2 eyes with retinal detachment, and 2 eyes with no light perception. Statistical regression model did not show influence of gender and previous surgery. Lower age at the time of surgery was found to be associated with higher probability of treatment failure.
Conclusions:
Molteno and Baerveldt glaucoma drainage implants surgery seems to be safe and effective treatment for primary and secondary pediatric glaucoma refractory to the initial surgical procedure and medical therapy.
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